Thread-controlling device for sewing-machines.



PATENTED MAR. '7, 1905 3. B. ALLEN.

THREAD CONTROLLING DEVICE FOR SEWING MACHINES.

APPLICATION FILED JULY 20,1904.

3 SHEETS-SHEET 1.

1/ Limo $0410 PATENTED MAR. 7. 1905.

E. B. ALLEN.

THREAD CONTROLLING DEVICE FOR SEWING MACHINES.

APPLICATION FILED JULY 20,1904.

3 SHEETS-SHEET 2.

No. 784,291. PATENTED MAR- 7, 1905. E. B. ALLEN.

THREAD CONTROLLING DEVICE 'PORSBWING MACHINES.

APPLICATION FILED JULY 20,1904.

3 SHEETS-SHEET 3.

UNITED STATES I atented March '7 1905 5- PATENT OFFIcE.

EDIVARD B. ALLEN, OF ELIZABETH, NEN JERSEY, ASSIGNOR TO THE SINGERMANUFACTURING COMPANY, A CORPORATION OF NEl V J ERSEY.

THREAD-CONTROLLING DEVICE FOR SEWING MACHINESi SPECIFICATION formingpart of Letters Patent No. 784,291, dated March '7', 1905.

Application filed July 20, 1904:. Serial No. 217,300.

To (all whom it may concern/.-

Be it known that I, EDWARD B. ALLEN, a citizen of the United States,residing at Elizabeth, in the county of Union and State of New Jersey,have invented certain new and useful Improvements in Th read-ControllingDevices for Sewing-Ylachines, of which the following is a specification,reference being had therein to the accompanying drawings.

This invention relates to a specific embodiment of the improvementforming the subject of the United States Patent No.757, 171, granted tome April 12, 1904; and it has for its primary object the provision ofmeans for handling the upper and lower threads of the machine, wherebythe position of the interlock may be varied in respect of theneedle-punctures in the material while retaining more nearly normalrelative tensions upon the upper and lower threads throughout the cycleof the machine. Heretofore in machines of this general character inorder to form the interlock upon the upper side of the material it hasbeen customary to place a strong tension upon the upper thread and avery light tension upon the lower thread, which has subjected the upperthread to a liability of breakage by excessive strain thereon in thestitchsetting operation and has resulted in the formation of loosestitches likely to be disarranged in subsequent laundering operationswhen applied to white goods. By approximating the normal thread-tensionconditions of the ordinary straight-ahead stitching-machines, in whichthe tensions upon the upper and lower threads are substantially equal,much better results are obviously attained.

The present invention consists, primarily,in the combination,withstitch-forming mechanism comprising a thread-carrying needle and anunder-thread-carrying loop-taker,of means independent of theupper-thread devices for supplying for each stitch the requisite amountof under thread while maintaining a uniform tension thereon, and meansfor varying the under-thread supply for the stitches of successivegroups.

In its preferred embodiment as applied to an oscillating shuttle-machineof the wellknown Singer type thi-zimprovementcomprises, in addition tothe usual pullotf flange carried by the shuttle, an auxiliary pull-offmember connected with the shuttle-driver, in respect of which it islongitudinally movable andprovided with means for periodically shiftingits longitudinal position for the initial stitch of successive groups ofstitches, whereby its effective action upon the shuttlethread isperiodically varied. As adapted to the class of buttonhole stitchingmachines forming the subject of m yUnited States Patent No. 738,591, ofSeptember 8, 1903, the auxiliary shuttle-thread pull-off member iscontrolled in its action by the feed-interrupting device connected withthe barring mechanism; but it is to be understood thatitis equallyadapted for embroidering, hemstitching, and other machines designed forthe production of groups of stitches of different character inornamental patterns and that the improvement is not, therefore, limitedto any particular type of buttonhole or other stitching machines.

The invention will be understood by reference to the accompanyingdrawings, in wh ich Figure 1 is a front elevation of abuttonhole-machine similar to that shown in my United States Patent No.757,171, with a portion of the standard and base broken away to exposethe parts within the same; Fig. 2, a bottom plan, and Fig. 3 a frontelevation, of the same with the face-plate removed. Fig. 4 is a planview, upon a larger scale, of the forward portion of the bracket-armwith the cover-plate of the barring mechanism removed. Fig. 5 is an edgeview, and Fig. 6 a side view, of the feed-actuating eccentric-rod andaccessories. Fig. 7 is a front view of the shuttle-driver, auxiliarypull-off, and its actuating devices; and Figs. 8 and 9 are plan views ofthe same, showing the pull-off in its extreme longitudinal positions;and Fig. 10 is a side elevation of the shuttle, its driver, andpull-off, showing the action of the latter upon the slmttle-thread.

The machine is constructed with the usual 7 frame.

work-plate 2 and overhanging arm 3, in which is journaled thedriving-shaft 4, having at its forward end the crank 5, connected bypitman 6 with the Vertically-reciprocating and laterally-vibratingneedle-bar 7, having the needle 8 and carried by the swinging frame 9,the horizontal or lateral movements being communicated to the needle-barframe by a camwheel 10, rotating once for each two rotations of the mainshaft 4. The cam-wheel 10 has a cam-groove 11, entered by a pin or stud12 on an arm of a lever or rocker 13 with its fulcrum or center ofmotion at 14 and connected through the bar 15, slotted swinging arm 16,-

and link 17 with an arm 18 of the needle-bar The lever or rocker 13 isprovided with a pin 19 and a keyhole-slot 20, disposed at differentdistances from its center of motion 14 and adapted to alternately engagethe lateral notch 21 and depending roller-stud 22, respectively, of thebar 15. The pin 19 is normally embraced by the notch 21 under the actionof the spring 15 upon the bar 15 to cause the rocker 13 to impart to theneedlebar its shorter lateral movements for the side stitches of thebuttonhole; but the bar 15 is periodically shifted in opposition to saidspring to enable its roller-stud 22, normally embraced by theclearance-space afforded by the enlargement of the slot 20, to enter thecontracted portion of the latter under the action of the spring-actuatedpawl-lever 23 upon the stud 24, carried by the bar 15, such pawlderiving its reciprocations transversely of the arm by means of thesnail-cam 25, (dotted in outline in Fig. 1,) acting upon the bent lever23 in opposition to the retracting-spring 26, which latter is ofsuificient strength to overcome the tension of the spring 15. Thepawl-lever 23 is pressed laterally, so as to snap over the stud 24 whenin its extreme inner position by means of a spring 27 acting upon thetail of the same.

The pawl-lever 23 is shifted laterally in opposition to its spring 27 torelease the stud 24 and permit the bar 15 to return to engagement withthe pin 19 under the action of its spring 15 by means of a bent lever28, carried by the cover-plate of the barring mechanism, (shown indotted lines in Fig. 4,) of which one arm lies in the path of movementof an adjustable stud 29, carried by a ratchetwheel 30, while the otherarm is adapted to engage a finger 31 of the pawl 23. As described in myPatent No. 757,171, a peripheral shoulder of the ratchet-wheel 3O restsnormally in contact with an adjustable stoppin 32 under the action of asuitable retracting-spring; but while the bar 15 is in barring positionthe actuating-pawl 33, carriedby the rocker 13, and the detent-pawl 34remain in operative engagement with the ratchet-wheel and the formercommunicates to the same an intermittent rotary movement until theengagement of the stud 29 with the release-lever 28, when in its returnto initial position under the action of the spring 15 the bar 15 engagesthe tail of the actuating-pawl 33 and throws the latter out of operativeengagement with the ratchet-wheel 30, while the detentpawl 34 issimultaneously shifted into and centric 35, embraced by the strap of aneccentric-rod 36, having a shankprovided with a lateral notch 37,loosely fitted to a socket in the pitman-rod 38, connected through thetwoarmed rocker 39 and pitman 40 with the lever 41 of a clutch device42, engagingthe feedwheel 43 upon the shaft 44, carrying the snail-cam25. To the pitman-rod 38 is pivoted at 45 a latch-lever46, formed with atooth 47, adapted to enter the notch 37 of the eccentricrod 36 andhaving its upper end extended into the path of lateral movement of therear end of the rod 15, by which it is shifted in opposition to thespring 48 to withdraw the tooth 47 from its notch 37, so as to permitthe eccentric-rod 36 to reciprocate idly in its socketin the pitman-rod38 to interrupt the normal actuation of the feed-cam While the bar 15 isin barring position, but to permit the restoration of the tooth 47 toengagement with the notch 37 and consequent resumption of feedingmovements of the feed-cam when the bar 15 is restored to side-stitchingposition.

In the stitching of purl-stitch buttonholes by lock-stitch mechanism itis necessary that suflicient under thread be drawn up through thematerial for each stitch by the needlethread to form the purl upon theupper face of the material and preferably intermediate the inner andouter needle-punctures. As has already been stated, this has heretoforebeen accomplished by employing a very loose tension upon the lowerthread and a very strong tension upon the upper thread in order that thelatter may supplement the normal action of the lower-thread pull-off insupplying the necessary lower thread for the stitch, the lower-threadpull-off having been heretofore necessarily limited in its action to themaximum amount of thread necessary for stitches requiring a minimumunderthreadsupply or barring-stitches. Such condition has been obviatedby the present improvement in the provision of a variable under-threadpull-off, herein shown as auxiliary to the usual pull-off flange uponthe shuttle, although evidently adapted to perform the desired functionsolely in each of its operative positions. By the adaptation of theshuttlethread pull-off to measure off the exact amount of shuttle-threadfor each side stitch and barstitch it is evident that the relativequantities of needle and shuttle threads will be thereby determined inthe same manner as by measuring off fixed amounts of the needle-thread,as described in my previous patent, No. 757,171, the action of thetake-up 75 upon the needlethread being in either case to set the stitchby drawing up against each other the requisite lengths of needle andshuttle threads.

In its present embodiment the shuttle 50 is mounted in the race 49 andis formed with the beak 51 and the usual pull-ofl' flange 52. Theshuttle-d river 53 is mounted upon the forward end of the oscillatingshaft 54 and is provided with the usual arms engaging the throat andheel of the shuttle for communicating to the latter its oscillatingmovements. Upon the shuttle-driver shaft 54 is mounted the carrier forthe pull-ofl, comprisinga loose sleeve 55, provided with aforwardly-projecting arm 56, fitted to a guide-slot in the arm of theshuttledriver and provided at its outer end with thecircumferentially-extending pull-01f finger 57,

detachably secured thereon by means of the screws 58. The operative faceof this pull-off finger is shown herein shaped to afford the finaldeflection for the lower thread 00, intermediate the bobbin-case 70 andthe under side of the work, as illustrated in Fig. 10, the initialpull-off action being effected by the ordinary pull-otf flange 52,shownherein as formed integral with the shuttle. The bobbin-case 70(illustrated only in dotted lines in Fig. 10) is of the well-knownSinger type and is provided with the usual tension-spring 71, betweenwhich and the outer wall of the bobbincase the lower thread is led tothe under side of the work. It is obvious that the pull-off member 57may be made of such form as to draw off from the bobbin the full supplyof under thread, when the corresponding member of'the shuttle may bedispensed with.

As represented in Fig. 3, the forward end or point of the pull-offfinger 57 is so disposed as to overlap the adjacent portion of thepullofl' flange 52 of the shuttle, and being turned inward slightly, asindicated in Figs. 8 and 9, is so disposed as to avoid catching theshuttlethread as it is led from the bobbin -case 7 0. It will thus beobserved that as represented herein the pull-ofl finger 57 formspractically a continuation of the pull-ofl' flange 52 of the shuttle, ofwhich it thus constitutes an adjustable portion, and that in'the returnof the shuttle to loop-taking position after the formation of a stitchthe ordinary and well-known action of its pull-ofl' flange in deflectingthat portion of the shuttle-thread intermediate the bobbin-case and thework is increased by the supplemental action of the pull-ofl" finger 57,which is similar thereto, but obviously difl'ers in extent, dependingupon its longitudinal position relative to the shuttle.

The sleeve 55 is provided with an annular groove 59, entered by alateral arm 60, carried by a reciprocating rod 61, mounted in theforward shuttle-shaft bearing 62 and connected with a secondreciprocating shift rod 63,

mounted in a fixed bracket 64, between which and a collar 65 upon saidrod is interposed a spring 66 for maintaining such rods and thepull-ofl' member 57 in inner or retracted position. The lower end of thelatch-lever 46 is provided with a cam-piece 67, secured verticallyadjustable thereon by means of the screw 68 entering the longitudinalslot 69 therein. The upper portion of this cam-piece is beveled upon.the end and one side for engagement with the rearward extremity of thesliding rod 63, as indicated more particularly in Figs. 8 and 9.

When the latch-lever 46 is in initial locking position, as representedin full lines in Figs. 6 and 9 and in dotted lines in Fig. 7, thecampiece 68 is in engagementwith the rod 63, and thus maintains thepull-ofl' member 57 in its outer position for producing a maximumunder-thread supply for each stitch, as indicated in Fig. 10, while theshifting of the latch-lever 46 under the action of the bar 15 for thebarring operation, as indicated in full lines in Figs. 7 and 8, effectsthe movement of the operative end of the cam-piece 67 aside out ofengagement with the rod 63, which latter is enabled under the action ofits spring 66 to withdraw the pull-ofl' member 57 into its innerposition, and thereby red uce the effective action of the same upon theunder thread and to correspondingly reduce the amount of shuttlethread draWn into the stitch, whereby the position of the interlock is changedfor the barring-stitches. hen the bar 15 returns to side-stitchingposition, and consequently releases the upper end of the latch-lever 46,the latter resumes its operative relation with the eccentric-rod 36 andthe cam-piece 67 is again thrust into operative engagement with the endof the rod. 63 to extend the pull-ofl' member 57 into its outerposition.

In cases wherein it is desired to produce socalled whip-stitchbuttonholes, or those in which the interlock of the upper and lowerthreads is uniformly intermediate the upper and lower faces of thematerial, the cam-piece 67 may be shifted by loosening the fasteningscrew 68 downwardly into inoperative position, in which its operativeportion is entirely below the rod 63, whereby the latter is permitted toremain throughout the cycle of the machine in retracted position and thepulloff member 57 to consequently act uniformly in the stitching of theentire buttonhole.

As herein shown and described. the campiece 67 is formed with only asingle step, inasmuch as the barring mechanism with which it isconnected provides for only a single shifting movement between extremepositions; but it is evident that the number and size of the steps withwhich said cam-piece is provided, and hence the number and extent ofvariations in the pull-off actions, will be dependent upon the characterof the pattern-controlling mechanism (herein represented as barringmechanism) employed in conjunction with the Varying the position ofconcatenation of thewith stitch-forming devices comprising arestitch-forming devices, and the improvement is thus well adapted formachines of other types than those constructed for stitchingbuttonholes.

As regards its automatic feature the present improvement differsessentially from others in effecting the change in the supply of underthread intermediate the production of two consecutive stitchesviz. ashereinbeforefdescribed, the final stitch of one group and the initialstitch of the succeeding groupwhereby the relative character of suchstitches, together with the other stitch or stitches of the respectivegroups,is varied. As regards this part of the present invention it isimmaterial with what frequency the changes of position of the pull-offdevice relative to the loop-taker is effected, this being determined bythe character of the stitching for which the machine is designed.

The pull-off mechanism herein shown and described is adapted foradjustment to vary the action upon the shuttle-thread by the provisionof a loose collar 72 upon the rod 63, formed with an arm 73, forked atits outer end to embrace an angular neck upon the rod 61, such collarbeing adjustably secured upon its rod by means of the set-screw 74. Thepulloff member 57 may therefore be set to pull off, initially, differentlengths of thread, although its motion under the action of the campiece67 is uniform for all adjustments in producing the groups of stitches ofdifl'erentcharacters, as before described.

From the foregoing description it will be seen that the under-threadpull-01f or regulating device is controlled directly by means of thefeed-interrupting device, which is actuated from the barring mechanism.The means for stitches in respect of'the needle-punctures may thereforebe properly said to be controlled by the feed-interrupter or by themechanism serving to increase the lateral throw of the needle forproducing the barring-stitches, one of said actuating parts only beingnecessary to produce the automatic action upon the shuttle-threaddescribed.

It is evident that the present improvement is susceptible of widemodification from the embodiment herein shown and described, itsessential feature being primarily the control of the character of thestitches composing successive groups by manipulation of the lowerthread, while the action of the upper-threadhandling devices remainsuniform for all stitches produced throughout the cycle of the machine.

Having thus set forth the nature of my invention, what I claim hereinis 1. In a sewing-machine, the combination ciprocating thread-carryingneedle and an under-thread loop-taker cooperating therewith, of aneedle-thread take-up, and automatic- I ally-controlled meanscooperating with said loop-taker for supplying equal amounts of underthread for each of two or more consecu tive stitches constituting agroup, and for varying the amount of under thread supplied for theinitial stitch of each group in respect of those of the preceding group.

2. In a sewing-machine, the combination withstitch-forming mechanismcomprising a thread-carrying needle and an under-thread loop-taker, of apull-off acting uniformly upon the under thread in the formation of asuccession of stitches, and means for automatically controlling saidpull-off to vary its effect upon the under thread in the production ofthe stitches of different successions or groups.

8. In a sewing-machine, the combination with stitch-forming mechanismcomprising a thread-carrying needle and an under-thread loop-taker, of apull-oif acting uniformly upon the under thread in conjunction with thesaid loop-taker in the formation of each stitch of a group of stitches,and a device acting periodically upon the pull-off in the formation ofthe initial stitch of each group to vary the effect of said pull-off inits action upon the under thread for the stitches of said group.

4. In a sewing-machine, the combination with stitch-forming devicescomprising a reciprocating thread carrying needle and an under-threadloop-taker cooperating therewith, of a device acting directly upon theunder thread for supplying equal quantities of the same for the stitchesof each group or succession, and means for automatically controllingsaid device for varying the underthread supply for the stitches ofsuccessive groups. v 5. In a sewing-machine, the combination with upperthread mechanism acting uniformly upon its thread for each stitch andunder-th read mechanism adapted to act upon the under thread uniformlyfor the stitches of each group or succession of stitches, ofautomatically-controlled means acting upon the under thread whereby thethread-supply for the stitches of each group or succession is variedfrom that of the stitches of the preceding group or succession.

6. In a sewing-machine, the combination with a thread-carrying needleand a uniformlyacting take-up and tension for the needlethread, and aloop-taker and lower-thread holder with uniformly-acting lower-threadtension, of a device independent of the upperthread take-up and tensionfor controlling the under-thread supply to automatically vary the sameat the end of each succession or group of stitches.

7. In a sewing-machine, the combination with stitch-forming mechanismcomprising a needle and complemental under-thread stitchforming devices,of a tension device acting uniformly upon the thread in all thestitchsetting operations, means for setting the stitches, a deviceacting upon the under thread whereby the position of concatenation ofthe upper and lower threads in respect of the needle-punctures may bevaried, and automatic means for controlling the operation of said devicefor changing the position of concatenation of the stitches of succeedinggroups at predetermined times.

8. In a sewing-machine, the combination with the work-plate andstitch-forming mechanism comprising a thread-carrying needle and anunder-thread loop-taker, disposed respectively above and below said\vork plate, of a device operating below the work-plate for regulatingthe supply of thread for each stitch, and means for controlling saiddevice to automatically vary the relative lengths of thread for thestitches of successive groups.

9. In a sewing-machine, the combination with stitch-forming mechanismcomprising a thread-carrying needle and an under-thread loop-taker,means for setting the stitches, and regulating means acting directlyupon the under thread for determining the relative lengths of upper andunder thread supplied for eachstitch, of a device acting automaticallyupon said regulating means to vary the relative thread supply forsuccessive stitches and thereby vary the position of concatenation ofthe threads in respect of the needle-punctu res.

10. In a sewing-machine, the combination with stitch-forming mechanismcomprising a tln'ead-carrying needle and an under-thread loop-taker, ofan under-thread pull-off device movable with said loop-taker, and meansfor automatically shifting the same relatively to said loop-taker tovary its action upon the under thread.

11. In a sewing-machine, the combination with stitch-forming mechanismcomprising a thread-carrying needle and an under-thread loop-taker, ofan under-thread pull-off device movable with said loop-taker, and meansfor automatically shifting the same relatively to said loop-taker afterthe operation of the latter in the formation of each group or successionof stitches.

12. In a sewing-machine, the combination with a vertically-reciprocatingthread-carrying needle and a shuttle provided with a suitablethread-casc, of a shuttle-driver, a circularly-moving shaft upon whichthe shuttledriver is mounted, a sleeve mounted upon and circularlymovable with said shaft, a pull-off linger carried by said sleeve, meansfor shifting said sleeve upon its shaft, and means for actuating saidshaft.

13. In a sewing-machine, the combination with a vertically-reciprocatingthread-carrying needle and a shuttle provided with a suitablethread-case, of a shuttle-driver, a circularly-moving shaft upon whichthe shuttledriver is mounted, a sleeve mounted upon and circularlymovable with said shaft but longitudinally movable thereon, a pull-offfinger carried by said sleeve, automatically-acting means for shiftingsaid sleeve upon its shaft at the end of each group or succession ofstitches, and means for actuating said shaft.

14. In a sewing-machine, the combination with stitch-forming mechanismcomprising a vertically-reciprocating and laterally-vibrating needle andan under-thread loop-taker, of means for automatically changing theextent of vibration of said needle for successive stitches, a regulatingdevice for determining the quantity of under-thread supply for eachstitch, and a connection between said means and the underthread -supplyregulating device for efl'ecting a change in the under-thread supplycorrespondingly with that of the lateral vibrations of the needle.

15. In a buttonhole stitching and barring machine, the combination witha verticallyreciprocating needle and an underthread loop-taker, ofcontrolling means acting upon the lower thread for regulating theunderthread supply for each stitch, barring mechanism, and meansconnected with the barring mechanism for operating said controllingmeans to vary the under-thread supply.

16. In a sewing-machine comprising upper and under thread stitch formingand feeding mechanisms, and a feed-interrupter for temporarilysuspending the feed of the work at the end of each group or successionof stitches of predetermined number, the combination with controllingmeans for regulating the supply of under thread for each stitch, ofmeans connected with and actuated by said feed-interrupter for operatingsaid controlling means to vary the supply of under thread.

17. In a sewing-machine comprising upper and under thread stitch formingand feeding mechanisms, and a feed-interrupter comprising a two-partconnecting-rod and a laterallymovable latch-lever therefor periodicallyactuated for temporarily suspend ingthe feed of the work, thecombination witha pull-off operating in conjunction with saidunder-thread mechanism for determining the quantity of lower threadsupplied for each stitch, of a shift-rod connected with said pull-off,and a cam-piece carried by said feed-interrupting latch-lever andengaging said shift-rod to pcriodically shift said pull-off.

18. In a sewing-machine, the combination with stitch-forming mechanismcomprising a tln'ead-carrying needle and an under-thread loop-taker, ofan under-thread pull-oil device movable with said loop-taker, andautomatically-acting means for shifting the same in respect of saidloop-taker for the production of different stitches of a succession ofstitches to vary its action upon the under thread.

19. In a sewing-machine, the combination with stitch-forming mechanismcomprising a thread-carrying needle and an under-thread loop-taker, ofan under-thread pull-off device circularly movable concentrically withand shiftable transversely of the path of movement of said loop-taker.and means normally stationaryin respect of the loop-taker for shiftingsaid pull-off to vary its action upon the under thread.

20. In a sewing-machine, the combination with stitch-forming mechanismcomprising a thread-carrying needle and a circularly-moving under-threadloop-taker, of a pull-off device With means for actuating it to controlthe under-thread supply for each stitch, and means acting automaticallyto shift the position of said pull-off in respect of the loop-takerafter the production of the first of two consecutive stitches forchanging its action upon the under thread and thus by affecting theunderthread supply changing the relative characters of said stitches.

21. In a sewing-machine, the combination with stitch-forming mechanismcomprising a thread-carrying needle and a circularly-moving under-threadloop-taker, of a pull-ofi device With means for actuating it to controlthe under-thread supply for each stitch, and means acting automaticallyto maintain said pull-0H device in one position in respect of thelooptaker for the production of two separate groups of stitches and toshift it into another position in respect of said loop-taker for theproduction of an intervening stitch or stitches whereby a succession ofstitches composed of groups differing in character is formed.

22. In a sewing-machine, the combination With stitch-forming devices comprising a reciprocating thread-carrying needle, a shuttle and acircularly-moving driver therefor, of an under-thread pull-off deviceacting in conjunction With said shuttle to measure off the under-threadsupply for each stitch, a carrier therefor mounted upon said driver andfitted to a longitudinal slid eWay in the same, and means for shiftingsaid pull-off device transversely of the path of movement of saidloop-taker to vary its action upon the under thread.

In testimony whereof I have signed myname to this specificatlon in thepresence of two subscribing witnesses.

EDWARD B. ALLEN.

Witnesses:

H. J. MILLER, H. A. KORNEMANN.

